UM3056
User manual
Getting started with the EVSPIN958 brushed DC motor driver expansion board
based on the STSPIN958
Introduction
The EVSPIN958 single brushed DC motor driver expansion board is based on the STSPIN958.
It provides an affordable and easy-to-use solution for the implementation of brushed DC motor driving applications. Thanks
to the parallel operation, it can be easily converted to a single half-bridge with double current capability. In addition to the
internal current limiter, the integrated amplifiers allow it to be used in systems with external current control. The EVSPIN958 is
compatible with the Arduino UNO R3 connector and most STM32 Nucleo boards.
Figure 1. EVSPIN958 expansion board
UM3056 - Rev 1 - September 2022
For further information contact your local STMicroelectronics sales office.
www.st.com
UM3056
Safety precautions
1
Safety precautions
Warning:
Some of the components mounted on the board could reach hazardous temperatures
during operation.
While using the board, please follow the following precautions:
•
•
•
•
UM3056 - Rev 1
Do not touch the components or the heatsink.
Do not cover the board.
Do not put the board in contact with flammable materials or with materials releasing smoke when heated.
After operation, allow the board to cool down before touching it.
page 2/18
UM3056
Getting started
2
Getting started
The main features of the EVSPIN958 expansion board are:
•
•
•
•
•
•
•
•
Voltage range from 5 V to 58 V
Phase current up to 5 A r.m.s
Adjustable output slew rate
Seven different driving modes
One current limiter with adjustable OFF time
Two integrated amplifiers with fixed gain
Full protection set including: overcurrent, undervoltage lock out and thermal shutdown
Compatibility with Arduino UNO R3 connector and STM32 Nucleo boards
The EVSPIN958 evaluation board is ready to be used in few steps. Follow this procedure to start your evaluation:
1.
Check the setting of the jumpers based on your configuration as described in Section 3
2.
Connect the board with the STM32 Nucleo board through the Arduino UNO R3
3.
Supply the board through the input 2 (VS) and 1 (ground) of the connector CN1
Further support material is available on the STSPIN958 product page www.st.com
UM3056 - Rev 1
page 3/18
UM3056
Hardware description and configuration
3
Hardware description and configuration
Figure 2. EVSPIN958 overview
The following tables provide the detailed pinout of the Arduino UNO R3 and ST Morpho connectors.
Table 1. Arduino UNO R3 connector table
Connector
CN5
CN9
CN6
CN8
Pin(1)
Signal
2
Operational amplifiers offset enable
3
Standby (active low)
6
Operational amplifier 1 output
7
Ground
3
Voltage reference current limiter
5
PWM1 input
7
Enable bridge
2
VDD
6
Ground
7
Ground
2
PWM2 input
3
TOFF signal
6
Operational amplifier 2 output
Remarks
Digital output in
PWM trimming mode
1. All non-listed pins are not connected.
3.1
Driving mode selection
The EVSPIN958 can drive up to 2 DC motors at the same time.
UM3056 - Rev 1
page 4/18
UM3056
Driving mode selection
The driving mode selection is done setting J1 and J2 jumpers (connected to MODE1 and MODE2 pins of the
device) on the top of the board.
J6 solder jumper on the bottom of the board must be closed/opened according to the selected driving mode.
The table below briefly summarizes the possible configurations:
Table 2. Driving mode settings
J1
J2
Driving
mode
Typical
application
2 x unidirectional
brushed DC
1-2
1-2
Dual halfbridge
J6(1)
open
(Figure 3)
1 x bidirectional
brushed DC
Max.
output
current
(each
motor)
Output
RDS(ON
)
Minimu
m OCD
threshol
d
0.2Ω
5 Arms
closed
7A
0.4Ω
(Figure 4)
1-2
2-3
2-3
1-2
Single fullbridge
Single halfbridge
1 x bidirectional
Figure 4
1 x high current
unidirectional
brushed DC(2)
closed
5 Arms
0.4Ω
7A
closed
10 Arms
0.2Ω
14 A
closed
5 Arms
0.4Ω
7A
(Figure 5)
1 x bidirectional
brushed DC
2-3(3)
2-3(3)
Single fullbridge with
mixed decay
or
Half bipolar
stepper
(Figure 4)
1. When J6 is closed, the removal of the shunt resistor 2 (R9) is recommended for higher precision of the triggering of the
current limiter
2. The motor can be connected between OUT and either LSS (like in the figure) or VS, paying attention to properly connect
PWM2 to GND or to VDD respectively.
3. This configuration is only available with current limiter in Fixed OFF time mode (see Section 3.2 ).
UM3056 - Rev 1
page 5/18
UM3056
Driving mode selection
Figure 3. Two unidirectional DC motors
M
M
+
V
UM3056 - Rev 1
OUT2
OUT1
VS
GND
page 6/18
UM3056
Driving mode selection
Figure 4. One bidirectional DC motor
M
+
V
UM3056 - Rev 1
OUT2
OUT1
VS
GND
page 7/18
UM3056
Current limiter mode
Figure 5. One unidirectional DC motors – higher current
M
+
V
3.2
OUT2
OUT1
VS
GND
Current limiter mode
The behavior of the current limiter can be changed by setting the J3 jumper (connected to MODE3 of the device)
as follows:
Table 3. Current limiter mode settings
J3
Current limiter mode
J5 and J3
1-2
Fixed OFF time
Closed
2-3
PWM trimming
Open
Decay time
Depending on R6 resistor
(Figure 6)
Depending on PWM input signals
In Fixed OFF time mode, the current limiter can be disabled by setting R6 to its minimum value.
The current threshold can be set in two different ways:
•
•
UM3056 - Rev 1
Trimming R13 resistor, leaving CN9.3 floating
Applying a square wave with variable duty cycle to CN9.3, setting R13 to its minimum value
page 8/18
UM3056
Output slew rate
Figure 6. tOFF versus ROFF
3.3
Output slew rate
The output slew rate can be increased moving the rotative switch SW1 clockwise. With the STSPIN958 device,
the slew rate value can be chosen from four different values, as shown in Table 4.
Table 4. Slew rate settings
RSR
Slew rate (typ. at VS = 58 V)
C-1 closed
10 kΩ
0.3 V/ns
C-2 closed
5.6 kΩ
0.6 V/ns
C-3 closed
2.2 kΩ
1.2 V/ns
C-4 closed
1 kΩ
2 V/ns
SW1
UM3056 - Rev 1
page 9/18
UM3056
Thermal performance
4
Thermal performance
An example of the thermal performances of the EVSPIN958 is provided in Figure 7 . The board is used in
full-bridge and parallel half-bridge configuration in a typical application to drive an inductive load with different
output currents ranging from 0.5 A to 4 A.
Set-up conditions:
•
•
•
•
•
Planar orientation of the board and natural convection only
Tambient = 25 °C
PWM frequency = 20 KHz
VS = 30 V
Output slew rate setting = 2 V/ns
Figure 7. EVSPIN958 - thermal performances
160
Parallel half bridge
140
Full bridge
Maximum
temperature [°C]
120
100
80
60
40
20
0
0
1
2
3
4
Output current [ARMS]
Figure 8. Thermal images (IOUT = 2ARMS)
Full-bridge configuration
UM3056 - Rev 1
Parallel half-bridge configuration
page 10/18
UM3056
Bills of material
5
Bills of material
Table 5. EVSPIN958 bill of material
UM3056 - Rev 1
Item
Qty.
Ref.
Description
Part/Value
Manufact.
Order code
1
1
CN1
Connector 5.08 mm Close Vertical
MORSV-508-2P_ Wurth
screw
Elektronik
691312510002 or
equivalent
2
1
CN2
Connector 5.08 mm close vertical
MORSV-508-4P_ Wurth
screw
Elektronik
691312510004 or
equivalent
3
1
CN5
Connector through-hole-pitch 2.54
CON-1x10
Samtec
SSQ-110-04-F-S
4
2
CN6,CN9
Connector through-hole-pitch 2.54
CON-1x8
Samtec
SSQ-108-04-F-S
5
2
CN7,CN10
Connector through-hole-pitch 2.54
N.M.
Samtec
ESQ-119-24-G-D
6
1
CN8
Connector through-hole-pitch 2.54
CON-1x6
Samtec
SSQ-106-04-F-S
7
2
C1,C8
SMT ceramic capacitor
100 n 15 V
8
1
C2
SMT ceramic capacitor
1 u 15 V
9
2
C3,C4
Through-hole aluminum elect.
capacitor
220 u 100 V
Panasonic
EEUFS2A221B
10
1
C5
SMT ceramic capacitor
220 n 15 V
11
2
C6,C7
SMT ceramic capacitor
1 n 15 V
12
2
C9,C10
SMT ceramic capacitor
100 p 15 V
13
1
C11
SMT ceramic capacitor
10 n 15 V
14
2
C12,C13
SMT ceramic capacitor
470 n 100 V
15
1
C14
SMT ceramic capacitor
100 n 100 V
16
2
D1,D2
Yellow LED
Yellow
17
1
D3
Red LED
Red
18
1
SW1
Rotative switch x4
ROT-SWITCH
Nidec
CS-4-14-NTB or
equivalent
19
3
J1,J2,J3
Header connector 1x3 pins
Closed 1-2
21
1
J5
Header connector 1x2 pins
Closed
22
1
J6
Solder jumper
Open
23
2
Q1,Q2
P MOSFET
MOSFET P
NXP
NX3008PBKW
24
1
R1
SMT resistor
22 k 1/10 W
25
2
R2,R20
SMT resistor
1 k 1/10 W
26
1
R3
SMT resistor
2.2 k 1/10 W
27
1
R4
SMT resistor
5.6 k 1/10 W
28
2
R5,R15
SMT resistor
10 k 1/10 W
29
1
R6
1/4" square trimpot trimming
potentiometer, top adjust
500 k
Bourns
3266W-1-504 LF
30
2
R7,R8
SMT resistor
4.7 k 1/10 W
31
2
R9,R10
SMT resistor
0.05 1% 3 W
Bourns
CRA2512-FZR050ELF
32
1
R11
SMT resistor
47 k 1/10 W
33
2
R12,R17
SMT resistor
330 R 1/10 W
34
1
R13
1/4" square trimpot trimming
potentiometer, top adjust
1k
Bourns
3266W-1-102 LF
35
1
R14
SMT resistor
3.3 k 1/10 W
page 11/18
UM3056
Bills of material
Item
Qty.
Ref.
Description
Part/Value
36
1
R16
SMT resistor
39 k 1/10 W
37
2
R18,R19
SMT resistor
10 k ½ W
38
9
Manufact.
Order code
R21,R22,R23
R24,R25,R26 SMT resistor
0 R 1/10 W
R27,R28,R29
TP1,TP2,TP3
39
9
TP4,TP5,TP6 Test point
TP-SMDS1751-46R
Harwin
S1751-46R
TP7,TP8,TP9
40
UM3056 - Rev 1
1
U1
STSPIN958
STSPIN958
page 12/18
UM3056
Schematic diagrams
6
Schematic diagrams
Figure 9. EVSPIN958 schematic diagram
J1
ST
VDD
3
2
1
NUCLEO
J2
J3
VDD
3
2
1
MODE1
VDD
3
2
1
MODE2
MODE3
GND
GND
TP 6
TP 7
VS
TP 5
& LOGO
FOR EVALUATION PURPOSE ONLY
CON3
CON3
CON3
M1
M2
M3
VS
ROHS COMPLIANT 2002/95/IEC & LOGO
CN7
0CN1
- 58V
2
VS
1
GND
C5
220n
REF_MCU
REF
P WM1
PWM1
EN_MCU
EN
R20 1k
TOFF
R28 0R
R27 0R
R29 0R
OFFS ET
nS TDBY
OFFSET
STBY
V1
V1
30
29
28
27
4
VS P UMP
VS
VS
VS
VS
32
31
OUT1
2
1
LS S 1
TP 2
TP 4
2
0.05R 3W
R9
V2
2
OUT1
OUT2
3
LS S 2
4
OUT2
LSS2
LSS1
2
J6
YELLOW
D1
2
0.05R 3W
R10
V2
1
YELLOW
D2
1
6
5
R7
4.7k
R8
4.7k
C9
100p
C10
100p
V1 V1
CON-1x8
CN5
1
2
3
4
5
6
7
8
9
10
CP 2
7
REF
LS S 2
TP 1
LS S 1
OUT1
R18
10K
1
16
SR
24
23
EP AD
TOFF
CP 1
LS S 1
LS S 1
OUT2
R19
10K
VDD
VDD
CON-1x10
R11
47k
CON-2x19
EN_MCU
MOS FET P
Q2
1
MOS FET P
Q1
1
C11
10n
3
3
REF_MCU
R16
39k
2
R22 0R
15
OUT1
OUT1
J5
TOFF
R26 0R
S TS P IN958
MODE1
MODE2
MODE3
21
REF
LS S 2
LS S 2
GNDP UMP
GND
C7
1n
P WM1
P WM2
33
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
20
19
18
CN2
26
25
OFFS ET
CN10
MODE1
MODE2
MODE3
NC
C
1
OUT2
OUT2
3
22
R6
500k
CN9
4
3
2
11
12
C13
470n
TP 3
EN/nFAULT
V1
V2
S W1
1k R2
2.2k R3
5.6kR4
10kR5
CON-1x6
S TRIP 254P -F-6
1
2
3
4
5
6
7
8
SR
V2
V2
R25 0R
P WM1
P WM2
C12
470n
U1
1
EN_nFAULT 14
8
17
R23 0R
R24 0R
PWM2/PH
TOFF
nS TDBY
OFFS ET
C6
1n
VS
100n
VBOOT
10
nS TDBY
P WM2
TOFF
VDD
R1
22k
CN8
CON-2x19
13
R21 0R
CON-1x8
S TRIP 254P -F-8
1
2
3
4
5
6
1u
C1
VDD
9
1
2
3
4
5
6
7
8
VDD
VDD TP 8
CN6
2
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
C4
220u
C2
1
2
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
C3
220u
C14
100n
R15
REF
3.3k
10k
C8
100n
REF
2
R13
1k
R17
330R
TP 9
R14
D3
Re d
1
REF
EN_nFAULT
R12
330R
VDD
UM3056 - Rev 1
page 13/18
UM3056
Revision history
Table 6. Document revision history
UM3056 - Rev 1
Date
Version
14-Sep-2022
1
Changes
Initial release.
page 14/18
UM3056
Contents
Contents
1
Safety precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2
Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3
Hardware description and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1
Driving mode selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2
Current limiter mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.3
Output slew rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4
Thermal performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
5
Bills of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
6
Schematic diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
UM3056 - Rev 1
page 15/18
UM3056
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Arduino UNO R3 connector table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Driving mode settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Current limiter mode settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Slew rate settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EVSPIN958 bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
UM3056 - Rev 1
page 16/18
UM3056
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
UM3056 - Rev 1
EVSPIN958 expansion board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
EVSPIN958 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Two unidirectional DC motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
One bidirectional DC motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
One unidirectional DC motors – higher current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
tOFF versus ROFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
EVSPIN958 - thermal performances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Thermal images (IOUT = 2ARMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
EVSPIN958 schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
page 17/18
UM3056
IMPORTANT NOTICE – READ CAREFULLY
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are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2022 STMicroelectronics – All rights reserved
UM3056 - Rev 1
page 18/18
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